Microhole Array Electrodes Based on Microporous Alumina Membranes

1992 ◽  
Author(s):  
Charles J. Brumlik ◽  
Chrales R. Martin ◽  
Koichi Tokuda
Keyword(s):  
Alumina Membranes ◽  
Microhole Array

Microhole array electrodes based on microporous alumina membranes

1992 ◽  
Vol 64 (10) ◽  
pp. 1201-1203 ◽  
Author(s):  
Charles J. Brumlik ◽  
Charles R. Martin ◽  
Koichi. Tokuda
Keyword(s):  
Alumina Membranes ◽  
Microhole Array

Compact and efficient gas diffusion electrodes based on nanoporous alumina membranes for microfuel cells and gas sensors

The Analyst ◽  
2020 ◽  
Vol 145 (1) ◽  
pp. 122-131 ◽  
Author(s):  
Wanda V. Fernandez ◽  
Rocío T. Tosello ◽  
José L. Fernández
Keyword(s):  
Response Times ◽  
Hydrogen Oxidation ◽  
Fast Response ◽  
Gas Diffusion ◽  
Limiting Current ◽  
Gas Diffusion Electrodes ◽  
Nanoporous Alumina ◽  
Alumina Membranes ◽  
Current Densities ◽  
Microfuel Cells

Gas diffusion electrodes based on nanoporous alumina membranes electrocatalyze hydrogen oxidation at high diffusion-limiting current densities with fast response times.

Alumina Membranes Are Mask for Structures Used in Hydrogen Energy

2016 ◽  
pp. 89-94
Author(s):  
V. A. Moshnikov ◽  
E. N. Muratova ◽  
Yu. M. Spivak
Keyword(s):  
Hydrogen Energy ◽  
Alumina Membranes

scholarly journals Nanoporous Alumina Membranes for Sugar Industry: An Investigation of Sintering Parameters Influence onUltrafiltration Performance

2021 ◽  
Vol 13 (14) ◽  
pp. 7593
Author(s):  
Farooq Khan Niazi ◽  
Malik Adeel Umer ◽  
Ashfaq Ahmed ◽  
Muhammad Arslan Hafeez ◽  
Zafar Khan ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Pore Size ◽  
Sugar Industry ◽  
Average Pore Size ◽  
Research Work ◽  
Homogeneous Distribution ◽  
Alumina Membrane ◽  
Average Pore ◽  
Nanoporous Alumina ◽  
Alumina Membranes

Ultrafiltration membranes offer a progressive and efficient means to filter out various process fluids. The prime factor influencing ultrafiltration to a great extent is the porosity of the membranes employed. Regarding membrane development, alumina membranes are extensively studied due to their uniform porosity and mechanical strength. The present research work is specifically aimed towards the investigation of nanoporous alumina membranes, as a function of sintering parameters, on ultrafiltration performance. Alumina membranes are fabricated by sintering at various temperatures ranging from 1200–1300 °C for different holding times between 5–15 h. The morphological analysis, conducted using Scanning electron microscopy (SEM), revealed a homogeneous distribution of pores throughout the surface and cross-section of the membranes developed. It was observed that an increase in the sintering temperature and time resulted in a gradual decrease in the average pore size. A sample with an optimal pore size of 73.65 nm achieved after sintering at 1250 °C for 15 h, was used for the evaluation of ultrafiltration performance. However, the best mechanical strength and highest stress-bearing ability were exhibited by the sample sintered at 1300 °C for 5 h, whereas the sample sintered at 1250 °C for 5 h displayed the highest strain in terms of compression. The selected alumina membrane sample demonstrated excellent performance in the ultrafiltration of sugarcane juice, compared to the other process liquids.

scholarly journals Gravity-Driven Separation of Oil/Water Mixture by Porous Ceramic Membranes with Desired Surface Wettability

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 457
Author(s):  
Chunlei Ren ◽  
Wufeng Chen ◽  
Chusheng Chen ◽  
Louis Winnubst ◽  
Lifeng Yan
Keyword(s):  
Porous Ceramic ◽  
Ceramic Membranes ◽  
Separation Performance ◽  
Water Mixture ◽  
Alumina Membrane ◽  
Water Separation ◽  
Alumina Membranes ◽  
Oil Water Separation ◽  
Gravity Driven ◽  
Oil Water

Porous Al2O3 membranes were prepared through a phase-inversion tape casting/sintering method. The alumina membranes were embedded with finger-like pores perpendicular to the membrane surface. Bare alumina membranes are naturally hydrophilic and underwater oleophobic, while fluoroalkylsilane (FAS)-grafted membranes are hydrophobic and oleophilic. The coupling of FAS molecules on alumina surfaces was confirmed by Thermogravimetric Analysis and X-ray Photoelectron Spectroscopy measurements. The hydrophobic membranes exhibited desired thermal stability and were super durable when exposed to air. Both membranes can be used for gravity-driven oil/water separation, which is highly cost-effective. The as-calculated separation efficiency (R) was above 99% for the FAS-grafted alumina membrane. Due to the excellent oil/water separation performance and good chemical stability, the porous ceramic membranes display potential for practical applications.

scholarly journals Magnetization reversal mechanisms in Fe/NiO bilayers grown onto nanoporous alumina membranes and Si wafers

AIP Advances ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 015113
Author(s):  
Enrique Navarro ◽  
María Alonso ◽  
Ana Ruiz ◽  
Unai Urdiroz ◽  
Marta Sánchez-Agudo ◽  
...  
Keyword(s):  
Magnetization Reversal ◽  
Nanoporous Alumina ◽  
Alumina Membranes

Preparation of thin anodic alumina membranes and their utilization for template electrodeposition

2016 ◽  
Vol 10 (3) ◽  
pp. 548-553 ◽  
Author(s):  
A. P. Leontiev ◽  
I. V. Roslyakov ◽  
A. S. Vedeneev ◽  
K. S. Napolskii
Keyword(s):  
Anodic Alumina ◽  
Alumina Membranes

γ Alumina membranes grafting by organosilanes and its application to the separation of solvent mixtures by pervaporation

2003 ◽  
Vol 32 (1-3) ◽  
pp. 175-179 ◽  
Author(s):  
S. Alami Younssi ◽  
A. Iraqi ◽  
M. Rafiq ◽  
M. Persin ◽  
A. Larbot ◽  
...  
Keyword(s):  
Solvent Mixtures ◽  
Alumina Membranes
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